Edit flags on gh pr commands

.github/workflows/scripts/create-orm-update-pull-request

@@ -8,7 +8,7 @@ echo "https://${GITHUB_TOKEN}:@github.com" > .git/credentials
 echo
 
 echo "##[section]Check for existing pull request"
-gh pr list -B ${BRANCH} -f '%H%n' | grep "^orm-update$" && {
+gh pr list -B ${BRANCH} | grep "orm-update" && {
  echo Pull request already exists. Stopping here.
  exit
 } || {
@@ -31,8 +31,7 @@ echo
 
 echo "##[section]Creating pull request"
 git push -f --set-upstream origin orm-update
-gh pr create -B ${BRANCH} -H orm-update -f -m "ISPyB ORM schema update v${DATABASE_SCHEMA}
-
+gh pr create -B ${BRANCH} -H orm-update -t "ISPyB ORM schema update v${DATABASE_SCHEMA}" -b "
 This is an automated pull request to update the ISPyB ORM schema.
 
 Before merging this pull request you may want to